Bias voltage supply

ABSTRACT

My invention applies an unmodulated A. C. voltage, having the form of a sine-wave, and derived from standard household electricity, commonly known as line voltage, to the input of a standard transistor configuration, namely that of the groundedemitter configuration, which amplifies both voltage and current.

United States Patent DeCoster 1541 BIAS VOLTAGE SUPPLY Lloyd 1). DeCoeter, 63 Wall Street, Bridge- [72] Inventor:

water, Mass. 02324 [22] Filed: May 12, 1969 21 Appl. No.2 825,127

[52] US. Cl ..330/40, 330/ l 2 [51] Int. CL... ..H03f 3/04 [58] Field ofSearch ..330/29, 199,40, l6, 12;

[56] References Cited UNITED STATES PATENTS Horowitz Orloff et al. ..330/40 Vance -32l/l8 3,386,053 5/1968 Priddy ..329/1o1x O'il-[ERPUBLICA'IIONS Amplifier Handbook by Shea; Pub. 1966 by McGraw-Hill, Inc; Pages l7-9 to l7-2l and 17-4l to 17-49 Relied upon.

Primary Examiner-Nathan Kaufman [57] ABSTRACT My invention applies an unmodulated A. C. voltage, having the form of a sine-wave, and derived from standard household electricity, commonly known as line voltage, to' the input of a standard transistor configuration, namely that of the grounded-emitter configuration, which amplifies both voltage and current. v

1 Claims, 1 Drawing Figure 0c. POWER 1|1|1| SUPPLY N012 POWER SUPPLY NO] 0 Q 0 Qty PRIMARY 0 C, POWER SUPPLY NO. 3

- BIAS VOLTAGE SUPPLY Previous to my invention only audio, modulated R Fcarrier waves were applied to transistor circuits. These R F-carrier waves were transmitted thru the air by radio stations, etc.

These radio frequency RF) transmitted waves consisted o a changing audio frequency'wave that is impressed on a second carrier wave of constant frequency." These radio and TV low level transmitted signals have been in the past identified by the symbol 8.

My invention amplifies voltage and current only, and no voice reproducing circuitry, or distortion circuitry is required, involved or employed.

My invention relates to the type of electricity applied to the input of a standard transistor configuration and not to the standard configuration itself. The voltage my invention applies is an a. c. voltage, unmodulated, unrectified and has the waveform of a sinewave.

My invention is a new method of amplifying voltage and current using three power supplies or the voltage from three secondary coils from an A transformer, coupled to a standard or conventional PNP transistor arranged in a groundedemitter configuration. Two of the power supplies are rectified to D.C. before applying voltage to the transistor. These rectified voltages, either from separate power supplies or from two of the transformer coils, furnish the normal amount of voltage (DC) to operate the forward bias (base to emitter) and reverse bias (collector to emitter).

The third power supply which is the crux of my invention derives its voltage source from ordinary 110 volt household electricity, stepped down thru a transformer, to a voltage that is less than the maximum voltage rating of the base-emitter or input circuit of the transistor being used. The voltage that is stepped down from the third power supply or third coil tap of the transformer, has a frequency of 60 cycles per second and is in the audio frequency range, although unmodulated. It has the form of a sinewave.

The voltage derived from the third power supply is inserted at a point in the input bias circuit, were previous to my inven tion, radio frequency low level signals, radio transmitted, were inserted and usually designated by the electronic symbol 8. See patent drawing for details of circuitry connections.

The FIGURE shows a preferred embodiment of my inventron.

Component values of all electronic parts appearing in the Patent Drawing:

T1, 1 10 volt Primary; Secondary, 6.3 volt, 12 Amps.

R1, 680 Ohms Resistor;

Two standard D cell flashlight batteries connected in series;

D1, Diode, 220 volt Max. rating;

C and C6, Capacitors, 20 UFD;

R5, Resistor, 1,000 Ohms;

R6, Resistor, 100 k Ohms;

R7, Variable Resistor or Potentiometer, 100 K Ohms;

T2, Transformer, Primary 1 volt; Secondary, Variable to 180 volts D. C. maximum. (Set at 28 volts) (All resistors are of one-half watt rating);

C1, Capacitor, 012 MFD;

R2, Resistor, 90 Ohms; R3 Resistor, 1 Meg. Ohm;

Q1, PNP Transistor, Motorola HEP-230, althouh any one of 3,000 or more transistors could be used.

The three power supplies will eventually be replaced by using one transformer with three secondary output coils, two of which will be rectified. The letter E means voltage, except the E associated with the transistor refers to Emitter.

BRIEF SUMMARY OF MY INVENTION My new invention is a new method of increasing X number of volts of electrical energy to more volts or X plus Y volts. As shown in my Patent Drawing schematic 37.3 volts (RMS) are increased to 62 volts (RMS). Thus an increase of 24.8 volts (RMS).

The figure of my Patent Drawing consists of a standard type of Transformer, Tl, whose primary connects to 1 17 volt A. C.

Household voltage. The secondary steps the l 17 volts down to an output voltage of 6.3 volts. Resistor R1 further reduces the output voltage to well below 6.3 volts. The reason for this further reduction in voltage is because of the fact that the combined power supply output voltages of the power supplies depicted by figures one and two cannot exceed 10 volts, the reverse bias rating of transistor Q1.

The Power Source Two consists of two standard D cells of These two D cells supply the 3 volts of D. C. necessary for the reverse bias action of the transistor 01. These two D cells could be replaced by any conventional D. C. power supply with an output of 3 volts D. C. or by a variable D. C. power supply. v I

Power source three of the Patent Drawing is a standard type of variable output D. C..Power Supply consisting of a transformer, T2 whose Primary connects to standard household voltage of 117 volts. The secondary measured betweenpoints m and n of the figure is 15 (RMS) volts. The voltage is then rectified by Diode D1 whose maximum rating is 200 volts.

The voltage is then filtered by capacitor C5, Resistor R5, and Capacitor C6. R6 is the bleeder resistor and R7 is a variable potentiometer of 100 K ohms which varies the output voltage at R. and S. In the drawing experiment the output of the No. 3 power supply was adjusted to '28 .volts D. C. This output voltage of the No. 3 power supply is applied to the Emitter- Collector circuit of the transistor Q1 and supplies the forward bias for thetransistor and of the polarity shown in Transistor Q1. The sum of the voltage outputs of power supplies numbered 1, 2, and 3 when added together are 37.3 volts and supply all the voltages necessary to operate the transistor circuit of Q1 of the patent drawing and should be considered the total input voltage 37.3 volts to the manufacturing process or method depicted in the patent drawing.

Transistor Q1 of the patent drawing is a standard commonemitter type of electronic circuit used for amplifying a radio signal, which normally enters from the receiver antenna at points A and G. In this method or invention the A. C. voltage waveform from power supply No. 1 is substituted for the radio signal. The transistor circuit of O1 is a common type of transistor circuitry found in most electronic textbooks. Circuit components consist of capacitor C1, 0.012 mfd; Reverse bias regulating resistor R2, ohms; R3, the load resistor, 1 megohm; and Q1 a Motorola PNP type HEP Power Germanium Transistor.

The Common-Emitter type of circuitry is well known for its voltage gain characteristics and when one applies the voltages from power supplies Nos. 1, 2, and 3 simulaneously, the output voltage reading at points F and L when read on a voltmeter registered 62 volts (RMS) or a gain of 24.7 volts. The peak voltage of the 62 volt output would be 86.8 volts A. C.

As another example, 1 use two D cell flashlight batteries of one and one-half volts each, connected in series in place of the 3 volt center tap of the transformer T40. Y

in place of the 22 volt transformer tap 1 use a Heath Company D.C. variable power supply No. EFl-7 l 4, Serial No. 9083, but any D.C. variable power supply will do.

For the 6.3 transfonner tap I use a standard volt transformer with a secondary of 6.3 volts. This is A.C. voltage.

The three taps from the transformer T40 in my patent draw- I ing supply all the necessary voltage to operate the amplifier namely 6.3 volts, plus 3 volts, plus 22 volts; or a total of 31.3 volts. From this total voltage I get an output of Nos. 20 and 21 of 48 volts. By varying or increasing the amount of voltage using my Heath Power Supply, in place of the 22 volt-transformer tap, I get a corresponding higher output voltage at Nos. 20 and 21.

Varying the values of resistors Nos. 8 and 13, also give a varying output voltage at 20 and 21. I

The output in all instances has been substantially higher.

' Here are typical examples of output results:

38 volts ln--62 volts out; 31.3 volts In48 volts out; Results show a high voltage gain or Beta.

1 '13 volts each, connected in series and of the polarity shown.

It may be necessary to connect an electrolytic capacitor between points A and B and another capacitor between points C and D to complete the rectification process. It would be advisable to add filtering components at this point too, if unfiltered power supplies are used. In my test set up of course I use pure D.C. from'the flashlight batteries in place of the three volt transformer tap and my power supply that replaces the 22 volt tap in my patent drawing is rectified from A.C. to D.C. and filtered.

As future developments will undoubtedly necessitate the changing of component values, transistor power ratings, etc., I hereby request the right to make changes in component and transistor power ratings as a part of this invention. In this respect, I request'permission to change the frequency of the A. C. Power Supply No. 1, FIG. 1, of the patent drawing. Also reserve the right to make changes in the output voltages of 7 Power Supplies Nos. 1, 2, and 3 of the patent drawing. Also to make adjustment in the bias control circuits of the transistor used. The mode of operation involving my invention, however, will remain the same.

In the same manner previously explained in Unit one of my invention and by the use of standard electronic circuitry it has likewise been established that the electrical component or characteristic known as current or amperage can also be amplified or increased from one level to a higher level resulting in more current or amperage. The only changes necessary to accomplish this are to change the configuration of the transistor circuitry from common-emitter type to common-collector type of circuit configuration, and to make corresponding changes in the powersupply or battery voltage polarities connected to the common-collector transistor circuitry. Let us now consider this as Unit No. 2 of my invention and a unit that can be used in connection with Unit No. l by combining the output voltages of Unit No. l and Unit No. 2. This can be accomplished by connecting the output of the two units either in a series, a parallel or by other electronic type circuitry. The 3 end result will be an output in which voltage and amperage or current have been raised to a higher level. v

Because the principals of my invention as described in Unit No. 1 are the same as those used in unit No. 2 and because it is common knowledge in already proven electronic textbooks theory that amperage or current be amplified to higher levels, I respectfully request that Unit No. 2 be made a part of and included in my invention.

I claim:

1. A power supply device comprising a transistor having base, collector and emitter electrodes, said transistor being connected in grounded emitter configuration, said base electrode connected to a first power source of alterating current, said collector electrode connected to a second power source which comprises a regulated direct current source and the emitter electrode connected to a third power source of direct current, wherein the output voltage across the collectoremitter circuit is in excess of 1% times the combined value of said power sources. 

1. A power supply device comprising a transistor having base, collector and emitter electrodes, said transistor being connected in grounded emitter configuration, said base electrode connected to a first power source of alterating current, said collector electrode connected to a second power source which comprises a regulated direct current source and the emitter electrode connected to a third power source of direct current, wherein the output voltage across the collector-emitter circuit is in excess of 1 1/2 times the combined value of said power sources. 